Type-writing machine.



PATENTED SEPT. 1, 1903.

0. H. SHEPARD. TYPE WRITING MACHINE.

APPLICATION FILED JULY 18, 1902.

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TYPE WRITING MACHINE.

APPLICATION FILED JULY 18, 1902.

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UNTTED STATES Iatented September i,

PATENT OFFICE.

CHARLES H. SHEPARD, OF BROOKLYN, NEW YORK, ASSIGNOR TO WYCKOFF,

SEAMANS 8r BENEDICT, OF ILION, YORK. 1

NEIV YORK, A CORPORATION OF NEW TYPE-WRITING MACHINE.

BPECIFIGATION formingpart of Letters Patent No. 737,786, dated September1, 1903. Application filed July 18, 1902. Serial No. 116,048. (Nomodel.)

To aJ/Z whom it may concern.-

Be it known that 1, CHARLES H. SHEPARD, a citizen of the United States,and a resident of the borough of Brooklyn, city of New York,

in the county of Kings and State of New York, have invented certain newand useful Improvements in Type-Writing Machines, of which the followingis a specification.

My present invention is directed to escape- IO ment mechanism fortype-writing machines; and the object of said invention is to provide a.simple, easy-acting, speedy, and eflicient escapement mechanism.

A further object of myinvention is to provide an efficient escapementwhich may be readily regulated to effect an ordinary or reverse feed atwill; and to these ends my invention consists in the features ofconstruction, arrangements of parts, and combinaac tions of devices tobe hereinafter described and claimed.

In the accompanying drawings, wherein like reference charactersrepresent corresponding parts with the various views, Figure 1 is acentral vertical sectional view of one form of type-writing machineembodying my invention, the section being taken from front to rear ofthe machine. Fig. 2 is a rear elevation of the same with parts brokenaway 0 and with parts in section. Fig. 3 is a fragmentarytopviewofescapementdevices. Fig. 4 is an enlarged detail transversesectional view of the feed or escapement wheels, the view illustratingthe connection thereof with 5 the feed shaft and pinion. Fig. 5 is anenlarged detail rear elevation of the escapement or feed wheels and thecooperating feed dog with the cover-plate and thumb-nut removed, theview illustrating in full lines the normal disposition of the parts whenset for either ordinary or reverse feed. Fig. 6 is a like view of thesame, illustrating the disposition of the parts when set for ordinaryfeed and at a full depression of a key. Fig. 7 is a 5 like view of thesame, illustrating the disposition of the parts when set for reversefeed and at a full depression of the key. Fig. 8 is an enlarged detailrear elevation of the escapenientwheels and feed-dog with thecover-plate and thumb-nut in place, the view illustrating thedisposition of the parts when set for ordinary feed and during thereturn of the feed-dog to the normal position. Fig. 9 is a detail sideview of the feed-dog and its carrier with parts broken away. Fig. 10 isa detail perspective view of the spring which normally maintains a fixedrelation between the feed-dog and its carrier. Fig. 11 is a detailperspective view of the feed-dog. Fig. 12 is a transverse sectional viewof a portion of the carriage-feed mechanism, the view being taken on theline a u of Fig. 4 and looking in the direction of the arrow at saidline.

In the various views parts have been omitted and other parts broken awayto more clearly illustrate the structure.

I have illustrated my invention in'its application to a No. 6 Remingtonmachine, though it should be understood that the invention or any of theseparate features thereof may be applied to diiferent characters oftype-writing machines and that to this end various changes may be madein the construction and operation of the parts shown without departingfrom the spirit of the invention.

In the drawings, 1 indicates the framing of the machine, in which thekey-levers 2 are fulcrumed at 2 and have the usual fingerkeys 2 and arerestored to the normal position by springs 5. Each key-lever isconnected by a link 3 to a type-bar 4 in the usual manner. Extendingbeneath the key-levers 2 is a universal bar 6, which is connected at itsends to links 7, which'in turn are connected to a transverse bar 8, thatis secured to an arm 9, which projects from a rock-shaft 10, that isrestored to the normal position by a spring 11, connected at one end,11, to a platelike bracketthat is secured to the frame 1 and at itsopposite end, 11", to a collar fixed to the shaft 10.

The rock-shaft 10 is provided with a rearwardly-extending arm 12, whichis connected at 13 to a two-part link 14, the separate parts of whichhave oppositelyturned screwthreads that cooperate with correspondingscrew-threads in a turnbuckle 15 to vary the length of the link, andthus change the throw imparted to the feed-dog carrier 16, which ispivoted at 17 to the upper end of said link;

19 Fig. 5.

The feed-dog carrier is pivoted at 18 to the frame of the machine andhas a feed-dog 19 pivoted thereto at 20, the downward movement of thedog being limited by a fixed stop Upon reference to Fig. 9 it will beobserved that the feed-dog carrier may have a limited movement withrelation to the free end of the feed-dog and around the pivot 18, whichconnects the dog-carrier to the frame. This limited independent movementof the carrier and feed-dog is permitted by the pin-and-slot connectionbetween the two, the pin 21 being carried by the carrier and extendingthrough an elongated opening or slot 22 in the feed-dog. The feed-dogand carrier are maintained normallyin a fixed relation to each other bya spring 23, that is connected to the feed-dog carrier at 24 and bearsat its under flat face 23 on the top of the feed-dog and at both sidesof the pivot 20, which connects the feed-dog to its carrier. Thepressure of the spring 23 normally maintains the parts in the positionillustrated in Fig. 9, with the pin 21 centered in the slot 22, forpurposes which will hereinafter appear. The end of the feed-dog 19extends at 25 at right angles to the body thereof and is prov vided witha beveled face 26. The angular end of the feed-dog cooperates with theteeth on the feed or escapement wheels 27 and 28, and as it vibratesback and forth between these teeth it will effect a feed movement of thecarriage, as will hereinafter more clearly appear. The feed-wheel 28 isfixed to a sleeve 29, Fig. 4, that is loosely seated on a shaft 30,mounted in a suitable bearing 31, secured at 32 to the top plate 33 ofthe machine. The forward end of this rock-shaft 30 is provided with afeed-pinion 34, which meshes with a feed-rack 35, carried by arms 36,which are pivoted at 37 to the carriage 38, that moves upontraverse-rods 39 40, and a shift-rod 41. The carriage is moved in thedirection of its feed by a spring-drum 42, that is mounted to revolveupon a spindle 43, carried by a bracket-plate 44, secured to the frame 1of the machine;

This spring-drum is connected to one end of a strap or band 45, whichhas its opposite end connected to a hook 46, that extends downwardlyfrom the carriage 38.

The sleeve 29, Fig. 4, hereinbefore referred to, is provided with anintegral ratchet-wheel 47, (see Figs. 4 and 12,) that coperates withspring-pressed pawls 48, that are pivoted to a cylindrical housing 49,which is secured to the shaft 30 by a set-screw 50, which passes througha threaded opening in the collar 51 of the housing and bears at itsinner end against the shaft 30. The construction of this housing and thepawl-and-ratchet arrangement referred to is somewhat similar'to thatemployed in the No. 6 Remington ma-- chine and enables theescapement-wheel to remain fixed while the carriage is being moved fromleft to right and constitutes an operative connection between theescapement-wheel and the feed-pinion to produce an intermittent feedmovement of the carriage when the escapement-wheels are operated. Aspring-pressed back-stop pawl 28 cooperates with the teeth of the wheel28 to prevent an accidental reverse rotation or displacement of thewheel when the carriage is moved to the right. The escapement-wheel 28is provided with crown-teeth 52, that extend laterally from one facethereof and each of which has a beveled face 53 and a substantiallystraight or radial face 54,that coiiperates with the straight face 55 onthe feed-dog. The,

escapement-wheel 27 is loosely mounted upon the sleeve 29, hereinbeforereferred to, and is preferably contained within the line of crownteethon the escapement-wheel 28, sothat the teeth of both escapement-wheelsare in substantially the same plane. The escapementwheel 27 is providedwith peripheral teeth 56, each of which is beveled upon one face 57 andis provided with a straight or radial face 58. The feed-wheel 27 has alimited movement of rotation with relation to the escapement-wheel 28under certain conditions, and the limit of this movement is controlledby a pin 59, carried by the escapement-wheel 28 and extending through aslot 60 in the escapementwheel 27. (See Figs. 5 and 7.) Thispin-and-slot connection permits an extent of independent movement of theescapement-Wheels 27 and 28 with relation to each other that correspondssubstantially to a letfer-space movement of the carriage. The two wheelsare normally maintained in a fixed relation by an expansion-spring 61,which bears at one end against a pin 62, that projects from a face ofthe feed-wheel 28 and extends into the segmental slot 63, in which thespring 61 is contained. The opposite end of the spring 61 bears at 64against an end wall of the slot 63 in the escapement-wheel 27, and asegmental guiding-pin 65 may be secured to the escapement-wheel 27 andextend into the opening 63 therein and through the spring 61 to guide itand to prevent its displacement from the slot. The spring 61, slot 63,and pin 62, as well as the slot 60, may be covered by a face-plate 66,Figs. 4 and 8, that is secured in place by a collar 67 and a set-screw68, which is received in a threaded opening and passes through thecollar and bears at its inner end against the shaft 30. This faceplate66 is apertured at 66 for the passage of the pin 59, which extendsbeyond the outer face thereof, as illustrated in Fig.4, and isscrew-threaded at 69 for co6peration with an internally screw-threadedthumb-nut .70, and the outer end of the pin may be headed at 59 toprevent the removal of the thu mb-nut. The thumb-nut 70 is adapted tobear at its inner end 71 against the face-plate and to bind theescapement-wheels 27 and 28 together to rotate as one part. When,however, the thumb-nut 70 is loosened, the escapement-wheels 27 and 28are free to receive a limited movement one with relation to the other.

WVhile the faces 54. of the crown-teeth 52 have been described assubstantially straight or radial, it will be observed that they do notradiate from the center of the wheel, but are each slightlyinclined fromthe crown toward the periphery of the wheel.

The purpose of inclining the face 54 of each tooth 52 is totend in theoperation of the machine to draw the feed-dog to the lowermost positionin its movement from the position shown in Fig. 7 to that illustrated inFig. 5 or to prevent too free a movement thereof in an upward direction,and thereby overcome any tendency of an automatic vibration of thefeed-dog when the parts are working under light tension, with aconsequent skipping of the escapement. This inclination of the face 54of each of the teeth 52 is so slight, however, that it does not retardthe upward movement of the feed-dog, which is efiected by a depressionof a character-key or the space-key 72.

It has been explained that the escapementwheels are adapted to moveindependently of one another when the thumb screw is loosened and torotate together as one escapement-wheel when the thumb-screw has beenscrewed down to bind the wheels together. When the wheels are free tomove independently of one another, the escapement is set for speed orreverse feed. When, however, the wheels 27 and 28 are secured to rotatetogether, the escapement is regulated for the ordinary feed movement.The ordinary feed movement of the parts will first be described.

The thumb-nut 70 having been screwed down to secure theescapement-wheels 27 and 28 together, with the parts disposed as shownin Fig. 5, a depression of a character-key or the spacing-key iseifective to raise the feeddog carrier 16 and the feed-dog connectedtheretofrom the position shown in full lines in Fig. 5 to a positioncorresponding substantially to that shown in dotted lines in the samefigure and as shown in Fig. 6. If the stroke upon the key be of theordinary character, the feeddog will not be raised to the heightrepresented in Figs. 5 and 6. If, however, the operator has a followingstroke, the feed-dog will be moved to substantially the position shown,where it will be arrested, and if the key continues to descend after thedog has been arrested the continued depression of the key will tendmerely to raise the feeddog carrier 16 against the tension of the spring23 and independently of the engaged end of the feed-dog, as shown inFig. 6, this independent movement of the feed-dog carrier and feed-dogbeing permitted by the pin'andslot connection 21 22. The effecttherefore is to provide a cushioning at the end of a stroke, which ishighly desirable and relieves the fingers of the operator fromobjectionable shock that would ordinarily result from suddenly arrestingthe feed-dog during the depression of a key.

It will be understood that the spring 23 is only brought into play inthe manner described when a long following stroke is given to the key,and in the normal operation of the machine the feed-dog and its carriermove together as one part. After a depression of the key and when itstarts to return to the normal position the pressure of the carriagedrumupon the escapement-wheels is effective to turn them together in thedirection of the arrow in Figs. 5, 6, and 8. This movement of the wheelswill tend, through the bevelface 57 of the engaged tooth 56, to cam ordepress the feeddog, as indicated in Fig. 8, until the engaged tooth 56clears it, and the dog will be restored to the normal position shown infull lines in Fig. 5, where it is in a position to arrest the nextsucceeding and advancing tooth 52 on the escapement wheel 28, thuspermitting the carriage to be fed one letter-space distance. It shouldbe understood that the movement of the feeddog from the position shownin Fig. 6 back to the normal position is controlled in the main by thespring 11 of the rocker-shaft, but that nevertheless the beveling 57upon each of the teeth 56 facilitates the return movement of the dog bycamming it down into the path of the next advancing tooth on the wheel28, thereby providing a quick and efficient escapement wherein there isno liability of the carriage skipping. It will likewise be seen that inthe normal operation of the machine the feed-dog and its carrier con--stitute practicallyone part and that no spring is relied upon to restorethe feed-dog to its normal position other than the spring 11, which isemployed to restore the rock-shaft 10 and the associated parts to thenormal position. In other words, no spring is employed in the normaloperation of the machine between the rock-shaft and the feed-dog, theseparts under normal conditions being positively operated.

In order to provide a reverse feed of the mechanism, it is merelynecessary to loosen the thumb-nut 70, and a depression of a key at thistime will cause the feed -dog to be moved from the position shown infull lines in Fig.5 to the position shown in Fig. 7, and the tension ofthe carriage-drum will overcome the tension of the spring 61, therebycausing the escapement-wheel 28 to be rotated in the direction of thearrow substantially a letter-space distance, when the pin movement ofthe feed-dog from the position shown in Fig. 7 to that indicated in fulllines in Fig. 5 is effective to release the wheel 27, when it will beadvanced a letter-space distance by its spring 61, and the parts arethen in position for the next operation. It will be observed that thebeveling 57 on each tooth 56 of the escapement-wheel 27 permits a quickadvance movement of the escapement-wheel. In other words,theescapement-wheel 27 starts to rotate by the pressure of its spring 61 assoon as the feed-dog starts to move from the position shown in Fig. 7 tothe full-line or normal position shown in Fig. 5, and by the time thefeed-dog releases the tooth 56 the escapement-wheel 27 will have all butcompleted its movement to the normal position.

The construction and operation of the escapement are such that no nicejudgment is necessary to change the device from ordinary to a reversefeed or vice versa, because of the fact that it is merely necessary toscrew down the binding-screw or to loosen it, as the case may be, whenthe partsare at rest or in the normal position, and in accordance withthe turning of this screw the machine is regulated to feed ordinary orreverse at will.

From the foregoing description it will be understood that theconstruction is such in the ordinary feed that the carriage .willcommence its movement the instant the pressure of the operators fingeris relieved upon the key and that it is possible to reduce the weight ofescapement and its controlling mechanism to a point that will allow ofthe attainment of a very high speed and without the employment ofextremely stiff springs.

While I have shown and described two separate escapement-wheels, whichmay be secured to rotate together, it should be understood that fromcertain aspects of my invention a single feed rack or wheel carrying twoseries of teeth may be employed and various other changes may be madewithout departing from the spirit of my invention.

While I have described with considerable detail one manner in which theescapement mechanism operates when set for ordinary feed and one mannerin which it operates when set for reverse feed, it should be understoodthat the operation may vary somewhat under different conditions. Forinstance, an adjustment of a turnbuckle 15, a change in the tension ofthe spring 23 employed between the feed-dog and its carrier, or a changein the tension of the carriagespring may alter somewhat the operationsspecifically described above, though the operations are substantiallythe same under different conditions.

What I claim as new, and desire to secure by Letters Patent, is-

1. In a type-writing machine, the combination of a carriage, a pluralityof feed-wheels therefor, means cooperating with the feed wheels toafford a step-by-step feed of the carriage, and regulating meanscooperating with said feed-wheels, whereby they may afford an ordinaryor reverse feed at will.

2. In a type-writing machine, the combina* tion of a carriage, afeed-wheel therefor, said feed wheel having a double row of teeththereon, one of said rows being crown-teeth which project laterally fromthe wheel, and a feed-dog which cooperates with said teeth to afford afeed of the carriage.

3. In a type-writing machine, the combination of a power-drivencarriage, an escapement-wheel therefor, said escapement-wheel having twoconcentric rows of teeth thereon in the same plane, a feed-dog whichcooperates with said teeth to afford a feed of the carriage,finger-keys, and means for moving said feed-dog at each operation of afinger-key.

4. In a type-writing machine, the combination of a carriage, twofeed-wheels therefor, one of said feed-wheels having a row oflaterally-extending crown-teeth projecting from the side thereof and oneof said rows being contained within the other, and a feed-dog whichcooperates with both of said feedwheels to afford a step-by-step feed ofthe carriage.

5. In a type-writing machine, the combination of a carriage, twofeed-wheels therefor, which wheels are adapted to rotate together forone character of'letter-spacing and to have a limited movement withrelation to each other for another character of letter-spacing, and afeed-dog which cooperates with both of said feed-wheels to afford astep-by-step feed of the carriage.

6. In a type-writing machine, the combination of a carriage, twofeed-wheels therefor, a feed-dog which cooperates with both of saidfeed-wheels to afford a step-by-step feed of the carriage, andregulating means for said feed-wheels to cause them to feed ordinary orreverse as desired.

7. In a type-writing machine, the combination of a carriage, twofeed-wheels therefor, which wheels are adapted to rotate together and tohave a limited movement with relation to each other, a feed-dog whichcooperates with both of said feed-wheels to afford a step-by-step feedof the carriage, and means for securing said wheels to rotate together,whereby an ordinary or reverse feed of the carriage may be provided atwill.

8. In a type-writing machine, the combination of a carriage, twofeed-wheels therefor, a spring which exerts a force to maintain a fixedrelation between said feed-wheels, a feed-dog which cooperates with saidfeed-wheels, and means for determining whether the said feedwheels willrotate together or will receive limited movements relatively one to theother for each letter-feed movement of the carriage.

9. In a type-writing machine, the combination of a carriage, twofeed-wheels therefor, the teeth of said wheels being concentric and inthe same plane, a feed-dog cooperating with the teeth of both wheels,and springpressed means which tend to maintain a fixed relation betweensaid feed-wheels.

10. In a type-writing machine, the combination of a carriage, afeed-wheel therefor that is adapted to receive intermittent movementseach corresponding substantially to a letter- .space movement of thecarriage, a second feedwheel carried by said first-named wheel andhaving a movement independently thereof ond feed-wheel carried by saidfirst-named wheel and having a movement independently thereof thatcorresponds substantially to a letter-space movement of the carriage, afeeddog which cooperates with both of said feedwheels, and means forsecuring said wheels to rotate together, whereby either ordinary orreverse feed of the carriage may be provided at will.

12. In a type-writing machine,the combination of a carriage, afeed-wheel therefor, a second feed-wheel carried by said first-namedwheel and having a movement independently thereof that correspondssubstantially to-a letter-space movement of the carriage, a spring whichtends to maintain a fixed relation between said feed-wheels, a feed-dogwhich cooperates with both of said feedwheels, and means for securingsaid wheels to rotate together, whereby either ordinary or reverse feedof the carriage may be provided at will.

13. In a type-writing machine,the combination of a carriage,a feed-wheelhaving beveled teeth thereon, a second feed-wheel carried by saidfirst-named wheel and having a movement independently thereof thatcorresponds substantially to a letter-space movement of the carriage,the teeth of the second wheel having beveled faces which are disposedopposite to the beveled faces on the first-mentioned feed-wheel, aspring which tends to maintain a fixed relation between said feedwheels,a feeddog which cooperates with both of said feed-wheels, and means forsecuring said wheels to rotate together,whereby either an ordinary orreverse feed of the carriage may be provided at will.

14. In a type-writin g machine,the combination of a carriage, a carriagefeed-wheel having two rows of oppositely-disposed beveled teeth and abeveled feed-dog cooperating therewith.

15. In a type-writing machine,the combination of a carriage, twofeed-wheels therefor having oppositely-disposed beveled teeth,one ofsaid feed-wheels having a limited movement independently of the other,and a beveled feeddog cooperating with the teeth on both of said wheels.

16. In a type-writing1nachine,the combination of a carriage, twofeed-wheels therefor having oppositely-disposed beveled teeth,one ofsaid feed-wheels having a limited movement independently of the other, aspring which tends to maintain a fixed relation between saidfeed-wheels, and a beveled feeddog cooperating with the teeth on both ofsaid wheels.

1 7. In a type-writing machine,thecombination of a carriage, twofeed-wheels therefor having oppositely-disposed beveled teeth,one ofsaid feed-wheels having a limited movement independently of the other, abeveled feed-dog cooperating with the teeth on both of said wheels, andmeans for securing said wheels against movement one with relation to theother.

18. In atype-writing1nachine,the combination of a carriage, a carriagefeed-wheel having crown-teeth thereon, a second feed-wheel havingperipheral teeth thereon, saidsecondnamed wheel being contained withinthe line of crown-teeth on the other wheel, and a feeddog cooperatingwith teeth of both wheels.

19. Inatype-writingmachine,thecombination of a carriage, a carriagefeed-wheel having crown-teeth thereon, a second feed-wheel havingperipheral teeth thereon, said secondnamed wheel being contained withinthe line of crown-teeth on the other Wheel, a feed-dog cooperating withteeth of both wheels, and means which permit a limited movement of saidwheels one with relation to the other.

20. In a type-writing machine, the combination of a carriage, a carriagefeed-wheel having crown-teeth thereon, a second feed-wheel havingperipheral teeth thereon, said secondnamed wheel being contained withinthe line of crown-teeth on the other wheel, a feed-dog cooperating withteeth of both wheols,means which permit a limited movement of saidWheels one with relation to the other, and means for securing saidwheels to rotate together as one wheel.

21. In a type-writing machine, the combination of a carriage, a carriagefeed-wheel having crown-teeth thereon, a second feed-wheel havingperipheral teeth thereon, said secondnamed wheel being contained withinthe line of crown-teeth on the first-mentioned wheel,

a feed-dog cooperating with teeth of both wheels, means which permit alimited movement of said wheels one with relation to the other, a springwhich tends to maintain a fixed relation between said feed-wheels, andmeans for securing said wheels to rotate together as one wheel, wherebyan ordinary or reverse feed of the carriage may be provided. t

22. In a type-writing machine, the combination of a carriage, afeed-rack carried thereby, a feed-pinion which meshes therewith, afeedwheel operatively connected to said feed-pinion, a second feed-wheelwhich is connected to said first-mentioned feed-wheel by a pinand-slotconnection, a spring which exerts a pressure between said feed-wheelsand tends to maintain them at their limit of movement in one directionwith relation to each other, a feed-dog which cooperates with the teethon IZO both of said feed-wheels, and means for determining whether thewheels will rotate together or separately to altord the letter-spacingof the carriage.

23. Inatype-writing machine, the combination of a carriage, a feed-rackcarried thereby, a feed-pinion which meshes therewith, a feedwheeloperatively connected to said feed-pinion, a second feed-wheel which isconnected to said first-mentioned feed-wheel by a pinand-slotconnection, a spring which exerts a pressure between said feed-wheelsand tends to maintain them at their limit of movement in one directionwith relation to each other, means for locking said feed-wheels torotate together, and a feed-dog which cooperates with the teeth on bothof said feed-wheels.

24, In a type-writing machine,the combination of a carriage, a carriagefeed-wheel having crown-teeth thereon, a second feed-wheel locatedwithin'the line of crown-teeth of the other feed-wheel, a pin-and-slotconnection between said wheels which permits an independent movement ofone wheel with relation to the other that corresponds substantially toaletter-sp'ace movement of the carriage, an opening in thesecondmentioned Wheel, a spring seated Within said opening and hearingat one end against an end wall thereof, a pin which is secured to thefirst-mentioned wheel and projects into said opening and forms a bearingfor the opposite end of said spring, and a feed-dog which cooperateswith the teeth of both of said feed-wheels.

25. In a type-Writing machine,the combination of a carriage, a carriagefeed-wheel having crown-teeth thereon, a second feed-wheel locatedwithin the line of crown-teeth of the other feed-wheel, a pin-and-slotconnection between said wheels which permits an independent movement01": one wheel with relation to the other that corresponds substantiallyto a letter-space movement of the carriage, an opening in thesecond-mentioned wheel, a spring seated within said opening and bearingat one end against an end wall thereof, a pin which is secured to thefirst-mentioned wheel and projects into said opening and forms a bearingfor the opposite end of said spring, a feed-dog which cooperates withthe teeth of both of said feed-wheels,and a thumbscrew which is threadedto the pin of said pin-and-slot connection and is adapted to bind thetwo feed-wheels to rotate together.

26. In a type-writing machine,the combination of a carriage, a carriagefeed-wheel having inwardly-extending beveled crown-teeth thereon,asecond feed-wheel located within the line of crown-teeth of the otherfeed-wheel, and having outwardly-extending peripheral beveled teeththereon, a pin-and-slot connection between said wheels which permits anindependent movement of one wheel with relation to the other thatcorresponds substantially to a letter-space movement of the carriage, anopening in the second-mentioned wheel, a spring seated Within saidopening and bearing at one end against an end wall thereof, a pin whichis secured to the firstmentioned wheel and projects into said openingand forms a bearing for the opposite end of said spring, a beveledfeed-dog which cooperates with the beveled faces of the teeth of both ofsaid feed-wheels, and a thumbscrew which is threaded to the pin of saidpin-and-slot connection and is adapted to bind the two feed-wheels torotate together, whereby the carriage may be fed ordinary or reverse atwill.

27. In a type-writing machine, the combination of a carriage, afeed rackor wheel therefor having a double row of teeth, a single feed-dogcooperating with said wheel, a feed-dog carrier, and a spring which inthe normal operation of the machine maintains a fixed relation betweenthe feed-dog and its carrier.

28. In a type-writing machine, the combination of a carriage, a feedrack or wheel having a double row of teeth therefor, a single feed-dogcooperating with said wheel, a feeddog carrier, and a spring which inthe normal operation of the machine maintains a fixed relation betweenthe feed-dog and its carrier, but which permits a further movement ofthe dog-carrier after the dog has been forced into contact with thefeed-wheel.

29. In atype-writing machine,the combination of a carriage, atype-carrier, key-levers therefor, a carriage feed rack or wheel havinga double row of teeth, a single feed-dog cooperating with said wheel, afeed-dog carrier, and a spring which in the normal operation of themachine maintains a fixed relation between the feed-dog and its carrierbut which permits a further movement of the dog-carrier after the doghas been forced into contact with the feed-wheel and by a fulldepression of the finger-key.

30. In a type-writing machine,the combination of a carriage, a feed rackor wheel therefor having a double row of teeth, a single feed-dogcooperating with said wheel, a feeddog carrier to which said dog ispivoted and With relation to which the carrier may be moved for alimited distance in the direction of movement of said dog, and a springwhich normally maintains a fixed relation between the dog and itscarrier.

31. In a type-writing machine,the combination of a carriage, a feed rackor wheel, a feed-dog that cooperates therewith and the movement of theengaging member of which is in the plane of the teeth of said feed rackor wheel, a feed-dog carrier, and a spring that normally maintains afixed relation between the dog and its carrier.

32. In a type-writing machine, the combination of a carriage, afeed-wheel having oppositely-disposed beveled teeth, a beveled feeddog,the movement of the engaging member of which isin the plane of the teethof the feedwheel, a feed-dog carrier to which the feeddog is pivoted,and a spring that normally maintains a fixed relation between thefeeddog and its carrier.

33. In a type-writing machine, the combinalion of a carriage, afeed-wheel having a double row of oppositely-disposed beveled teeth, asingle beveled feed-dog, the movement of which is toward and away fromthe axis of the feed-wheel, a feed-dog carrier to which the feed-dog ispivot-ed and with relation to which the carrier may be moved for alimited distance in the general direction of movement of said feed-dog,and a spring that normally maintains a fixed relation between thefeed-dog and its carrier.

34. In a type-writing machine, the combination of a carriage, printinginstrumentalities,'finger-keys therefor, two feed-wheels that areadapted to move relatively to each other, and a feed-dog that isnormally in engagement with one of said wheels and is adapted to afforda full letter-space movement of the carriage on the downward movement ofa finger-key and when the dog is moved from its initial position ofengagement with one wheel and into engagement with the other.

35. In a type-writing machine, the combination of a carriage, printinginstrumentalities, finger-keys therefor, a feed-wheel oomprising a loosemember and a fast member that are adapted to move relatively to eachother, and a feed-dog that normally engages the fast member and affordsa complete letter-feed movement of the carriage on the depression of afinger-key.

Signed in the borough of Manhattan, city of New York, in the county ofNew York and State of New York, this 16th day of July, A. D. 1902.

CHARLES H. SHEPARD.

Witnesses:

E. M. WELLS, CHARLES E. SMITH.

